National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Washington Manassas Airport (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

Fair

83°F

28°C

Humidity 65%
Wind Speed S 6 mph
Barometer 29.93 in (1014.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 2 Oct 5:56 pm EDT
Extended Forecast for

Haymarket VA

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. West wind 6 to 10 mph becoming north in the evening. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 8am, then a slight chance of showers after 9am. Cloudy, then gradually becoming mostly sunny, with a high near 68. North wind 5 to 9 mph. Chance of precipitation is 20%.

    High: 68 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly after 5am. Mostly cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers, mainly between 8am and 2pm. High near 65. Light east wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 65 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    Showers then
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. West wind 6 to 10 mph becoming north in the evening. Chance of precipitation is 50%.
Saturday
A slight chance of showers before 8am, then a slight chance of showers after 9am. Cloudy, then gradually becoming mostly sunny, with a high near 68. North wind 5 to 9 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers, mainly after 5am. Mostly cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%.
Sunday
Showers, mainly between 8am and 2pm. High near 65. Light east wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers before 8pm. Cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 71.
Monday Night
Clear, with a low around 46.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Clear, with a low around 43.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Haymarket VA
 38.82°N 77.64°W (Elev. 348 ft)
Last Update:
4:53 pm EDT Oct 2, 2026
Forecast Valid:
6pm EDT Oct 2, 2026-6pm EDT Oct 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation